Add serializer param to RPC service
Add serializer param to RPC service

Allow a serializer to be passed to RPC service class
when it is instantiated.

Change-Id: I4162d8e94d023b9b724ea35b02823ddd6317032b

Tehsmash/ironic,dims/ironic,bacaldwell/ironic,citrix-openstack-build/ironic,ionutbalutoiu/ironic,froyobin/ironic,naototty/vagrant-lxc-ironic,rackerlabs/ironic,naterh/ironic,openstack/ironic,SauloAislan/ironic,ramineni/myironic,pshchelo/ironic,devananda/ironic,SauloAislan/ironic,varunarya10/ironic,ionutbalutoiu/ironic,JioCloud/ironic,naototty/vagrant-lxc-ironic,openstack/ironic,redhat-openstack/ironic,rdo-management/ironic,supermari0/ironic,dims/ironic,NaohiroTamura/ironic,faizan-barmawer/openstack_ironic,Tan0/ironic,hpproliant/ironic,NaohiroTamura/ironic,debayanray/ironic_backup,pshchelo/ironic,bacaldwell/ironic,citrix-openstack-build/ironic